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3-19 ENGINE
CYLINDER HEAD SERVICE
• Remove the cam chain tensioner by removing the bolt.
• Compress the springs with the special tools.
• Remove the valve cotters from the valve stem.
a
09916-14510: Valve spring compressor
09916-14910: Valve spring compressor attachment
09916-84511: Tweezers
• Remove the valve spring retainer, inner spring and outer
spring.
• Remove the vlave stem from the other side.
• Remove the oil seal with a long-nose pliers.
• Remove the spring seat.
NOTE:
Removal of the valves completes ordinary disassembling
work. If valve guides have to be removed for replacement
after inspecting related parts, carry out the steps shown in
valve guide servicing.
CYLINDER HEAD DISTORTION
Decarbonize the combustion chamber.
Check the gasketed surface of the cylinder head for distor-
tion with a straightedge and thickness gauge, taking a clear-
ance reading at several places as indicated. If the largest
reading at any position of the straightege exceeds the limit,
replace the cylinder head.
Service Limit: 0.05 mm (0.002 in)
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